Advice on connecting TinySA Ultra to audio amplifier

Oden, Jon David All Messages By This Member #19810 I would be thankful for any advice on how to connect my TinySA Ultra to the amplifiers I am trying to repair. ?Currently working on Magnavox Chassis # R204 ?Using a RF Signal Generator is relatively new to me so am having trouble understanding how to physically connect the signal generator to the FM and AM input. ?For example, do I need an attenuator between the Ultra and FM antenna input connectors?
Erik Kaashoek All Messages By This Member #19812 On Tue, Apr 1, 2025 at 11:01 PM, Oden, Jon David wrote: do I need an attenuator between the Ultra and FM antenna input connectors? For protection of the tinySA I would recommend to use a 20 dB attenuator directly connected to the tinySA RF SMA and ALWAYS leave it on. Connect the outside of the attenuator SMA connector to chassis ground and the center pin of the SMA to either one of the FM antenna connectors of to the AM antenna connection. -- Designer of the tinySA For more info go to
Oden, Jon David All Messages By This Member #19817 Thank you! ?To be clear, connect a 20 dB attenuator (from Amazon) to the RF output, then a wire (SMA - > BNC with alligator clips or SMA bare wire coaxial cable - also Amazon) red connected to FM antenna and black to chassis ground?
Erik Kaashoek All Messages By This Member #19818 Yes -- Designer of the tinySA For more info go to

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